We look at the division of 4229932 by 721 
We want to divide 4229932 by 721.

On to step 1:
The number 721 fits into 4 0 times, leaving a remainder of 4.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
The remainder is 4 after subtracting 0 from 4.
Take the next digit (2) from the dividend and append it to 4, then repeat: 42 / 721

Moving on to step 2:
42 divided by 721 is 0 with a remainder of 42.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 42, we get 42.
Fetch the next digit (2) from the dividend, attach it to 42 and continue: 422 / 721

Moving on to step 3:
The number 721 fits into 422 0 times, leaving a remainder of 422.
Record the quotient 0 as the next digit in the result. 
Result so far: 0.0
Subtract 0 from 422 to get 422.
Append the next digit (9) from the dividend to 422 and continue with: 4229 / 721

Let's proceed to step 4:
4229 divided by 721 is 5 with a remainder of 624.
Record the quotient 5 as the next digit in the result. 
Result so far: 5.0
If we take 3605 away from 4229, we end up with 624.
Bring next digit (9) of the dividend behind the 624 and repeat the process: 6249 / 721

Moving on to step 5:
721 goes into 6249 8 times with a remainder of 481.
Write down 8 as next digit of the result. 
Result so far: 58.0
Subtracting 5768 from 6249 leaves us with 481.
Include the next digit (3) from the dividend after 481, then repeat: 4813 / 721

On to step 6:
721 can be fit into 4813 6 times, resulting in a remainder of 487.
Record the quotient 6 as the next digit in the result. 
Result so far: 586.0
Subtract 4326 from 4813 to get 487.
Include the next digit (2) from the dividend after 487, then repeat: 4872 / 721

Let's proceed to step 7:
If we divide 4872 by 721, we get 6 and a remainder of 546.
Write down 6 as next digit of the result. 
Result so far: 5866.0
The remainder is 546 after subtracting 4326 from 4872.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5460, and continue the process.

On to step 8:
The number 721 fits into 5460 7 times, leaving a remainder of 413.
Use 7 as the next digit of our solution. 
Result so far: 5866.7
The remainder is 413 after subtracting 5047 from 5460.
Since there are no more digits in the dividend, we add a zero to the remainder making it 4130, and continue the process.

Step 9:
721 can be fit into 4130 5 times, resulting in a remainder of 525.
Write down 5 as next digit of the result. 
Result so far: 5866.75
If we subtract 3605 from 4130, we get 525.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5250, and continue the process.

Let's proceed to step 10:
When dividing 5250 by 721, we get 7 with a remainder of 203.
The number 7 becomes the next digit in our result. 
Result so far: 5866.757
Subtract 5047 from 5250 to get 203.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2030, and continue the process.

Going ahead to step 11:
When dividing 2030 by 721, we get 2 with a remainder of 588.
The next digit of our result is 2. 
Result so far: 5866.7572
Deduct 1442 from 2030 and we're left with 588.
Since there are no more digits in the dividend, we add a zero to the remainder making it 5880, and continue the process.

Let's proceed to step 12:
721 goes into 5880 8 times with a remainder of 112.
Record the quotient 8 as the next digit in the result. 
Result so far: 5866.75728
Subtracting 5768 from 5880 leaves us with 112.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1120, and continue the process.

Advancing to step 13:
The number 721 fits into 1120 1 times, leaving a remainder of 399.
Use 1 as the next digit of our solution. 
Result so far: 5866.757281
Deduct 721 from 1120 and we're left with 399.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3990, and continue the process.

Moving on to step 14:
The number 721 fits into 3990 5 times, leaving a remainder of 385.
Record the quotient 5 as the next digit in the result. 
Result so far: 5866.7572815
Deduct 3605 from 3990 and we're left with 385.
Since there are no more digits in the dividend, we add a zero to the remainder making it 3850, and continue the process.

On to step 15:
721 goes into 3850 5 times with a remainder of 245.
Put 5 as the next digit of the answer. 
Result so far: 5866.75728155
Deduct 3605 from 3850 and we're left with 245.
Since there are no more digits in the dividend, we add a zero to the remainder making it 2450, and continue the process.

After the division, we end up with 5866.75728155 and a remainder of 2.45e-07.